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import React, { useEffect, useState } from "react";
import { useRouter } from "next/navigation";
import { BookOpen, Users, PlusCircle, X, Settings2 } from "lucide-react";
import toast from "react-hot-toast";
import api, { getApiErrorMessage } from "@/lib/api";
import GlassBreadcrumb from "@/components/ui/GlassBreadcrumb";
import GlassPageHeader from "@/components/ui/GlassPageHeader";
import GlassCard from "@/components/ui/GlassCard";
import GlassInput from "@/components/ui/GlassInput";
import GlassSelect from "@/components/ui/GlassSelect";
import GlassButton from "@/components/ui/GlassButton";
import type {
TeacherResponse,
SubjectResponse,
ClassroomResponse,
ClassCreate,
} from "@/types";
type FormErrors = Partial<Record<keyof ClassCreate, string>>;
const SEMESTER_OPTIONS = Array.from({ length: 8 }, (_, i) => ({
value: String(i + 1),
label: `Semester ${i + 1}`,
}));
export default function CreateClassPage(): React.ReactElement {
const router = useRouter();
const [teachers, setTeachers] = useState<TeacherResponse[]>([]);
const [subjects, setSubjects] = useState<SubjectResponse[]>([]);
const [classrooms, setClassrooms] = useState<ClassroomResponse[]>([]);
const [form, setForm] = useState<ClassCreate>({
name: "",
subject_id: "",
teacher_id: "",
});
const [errors, setErrors] = useState<FormErrors>({});
const [loading, setLoading] = useState(false);
useEffect(() => {
async function fetchMasterData(): Promise<void> {
try {
const [teachersRes, subjectsRes, classroomsRes] = await Promise.all([
api.get<TeacherResponse[]>("/admin/users/teachers"),
api.get<SubjectResponse[]>("/admin/subjects"),
api.get<ClassroomResponse[]>("/admin/classrooms"),
]);
setTeachers(teachersRes.data);
setSubjects(subjectsRes.data);
setClassrooms(classroomsRes.data);
} catch {
toast.error("Could not load master data.");
}
}
void fetchMasterData();
}, []);
function set(field: keyof ClassCreate, value: string | number | undefined): void {
setForm((prev) => ({ ...prev, [field]: value }));
if (errors[field]) setErrors((prev) => ({ ...prev, [field]: undefined }));
}
function validate(): boolean {
const errs: FormErrors = {};
if (!form.name.trim()) errs.name = "Class name is required";
if (!form.teacher_id) errs.teacher_id = "Teacher is required";
if (!form.subject_id) errs.subject_id = "Subject is required";
setErrors(errs);
return Object.keys(errs).length === 0;
}
async function handleSubmit(e: React.FormEvent): Promise<void> {
e.preventDefault();
if (!validate()) return;
setLoading(true);
try {
await api.post("/admin/classes", form);
toast.success("Class created successfully");
router.push("/admin/classes");
} catch (err: unknown) {
toast.error(getApiErrorMessage(err, "Failed to create class"));
} finally {
setLoading(false);
}
}
const teacherOptions = [
{ value: "", label: "— Select Teacher —" },
...teachers.map((t) => ({
value: t.id,
label: `${t.first_name} ${t.last_name} — ${t.department}`,
})),
];
const subjectOptions = [
{ value: "", label: "— Select Subject —" },
...subjects.map((s) => ({ value: s.id, label: `${s.name} (${s.code})` })),
];
const classroomOptions = [
{ value: "", label: "None — no classroom" },
...classrooms.map((c) => ({
value: c.id,
label: c.building ? `${c.name} — ${c.building}` : c.name,
})),
];
return (
<div className="animate-fade-in-up">
<GlassBreadcrumb
items={[
{ label: "Admin", href: "/admin/dashboard" },
{ label: "Classes", href: "/admin/classes" },
{ label: "Create" },
]}
/>
<GlassPageHeader
title="Create Class"
description="Set up a new academic class with FK-linked subject and classroom"
/>
<form onSubmit={handleSubmit} className="max-w-4xl space-y-8">
<div className="grid grid-cols-1 lg:grid-cols-3 gap-8">
<div className="lg:col-span-1 space-y-8">
<GlassCard className="!p-0 overflow-hidden relative">
<div className="absolute top-0 left-0 w-full h-1 bg-gradient-to-r from-amber-500 to-orange-500"></div>
<div className="p-6 border-b border-white/5 bg-white/[0.01]">
<h3 className="text-lg font-semibold text-white flex items-center gap-2">
<BookOpen size={20} className="text-slate-300" />
Core Info
</h3>
<p className="text-sm text-slate-400 mt-1">Primary identifiers.</p>
</div>
<div className="p-6 space-y-5">
<GlassInput
label="Class Name"
placeholder="e.g. CS-101-A"
value={form.name}
onChange={(e) => set("name", e.target.value)}
error={errors.name}
/>
</div>
</GlassCard>
<GlassCard className="!p-0 overflow-hidden relative border border-white/10">
<div className="absolute top-0 left-0 w-full h-1 bg-gradient-to-r from-purple-500 to-indigo-500"></div>
<div className="p-6 border-b border-white/5 bg-white/[0.01]">
<h3 className="text-lg font-semibold text-white flex items-center gap-2">
<Users size={20} className="text-slate-300" />
Capacity
</h3>
<p className="text-sm text-slate-400 mt-1">Enrollment limits.</p>
</div>
<div className="p-6">
<GlassInput
label="Max Students (optional)"
type="number"
placeholder="e.g. 60"
value={form.max_students !== undefined ? String(form.max_students) : ""}
onChange={(e) =>
set("max_students", e.target.value ? Number(e.target.value) : undefined)
}
/>
</div>
</GlassCard>
</div>
<div className="lg:col-span-2">
<GlassCard className="!p-0 overflow-hidden relative h-full">
<div className="absolute top-0 left-0 w-full h-1 bg-gradient-to-r from-blue-500 to-cyan-500"></div>
<div className="p-6 border-b border-white/5 bg-white/[0.01]">
<h3 className="text-lg font-semibold text-white flex items-center gap-2">
<Settings2 size={20} className="text-slate-300" />
Class Configuration
</h3>
<p className="text-sm text-slate-400 mt-1">Spatial and academic assignments.</p>
</div>
<div className="p-6 grid grid-cols-1 sm:grid-cols-2 gap-6">
<div className="sm:col-span-2">
<GlassSelect
label="Teacher"
options={teacherOptions}
value={form.teacher_id}
onChange={(v) => set("teacher_id", v)}
error={errors.teacher_id}
/>
</div>
<GlassSelect
label="Subject"
options={subjectOptions}
value={form.subject_id}
onChange={(v) => set("subject_id", v)}
error={errors.subject_id}
/>
<GlassSelect
label="Classroom (optional)"
options={classroomOptions}
value={form.classroom_id ?? ""}
onChange={(v) => set("classroom_id", v || undefined)}
/>
<GlassSelect
label="Semester"
options={[{ value: "", label: "— Select —" }, ...SEMESTER_OPTIONS]}
value={form.semester ? String(form.semester) : ""}
onChange={(v) => set("semester", v ? Number(v) : undefined)}
/>
<GlassInput
label="Batch"
placeholder="e.g. 2022-2026"
value={form.batch ?? ""}
onChange={(e) => set("batch", e.target.value || undefined)}
/>
</div>
</GlassCard>
</div>
</div>
<div className="flex justify-end gap-4 pt-4 pb-12">
<GlassButton variant="ghost" type="button" onClick={() => router.back()} icon={<X size={16} />}>
Cancel
</GlassButton>
<GlassButton variant="primary" type="submit" loading={loading} icon={<PlusCircle size={16} />}>
Create Class
</GlassButton>
</div>
</form>
</div>
);
}
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